greenplumn CQueryToDXLResult 源码
greenplumn CQueryToDXLResult 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/base/CQueryToDXLResult.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CQueryToDXLResult.h
//
// @doc:
// Class representing the result of the Query to DXL translation
//
//---------------------------------------------------------------------------
#ifndef GPDXL_CTranslatorQueryToDXLOutput_H
#define GPDXL_CTranslatorQueryToDXLOutput_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLNode.h"
namespace gpdxl
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CQueryToDXLResult
//
// @doc:
// Class representing the result of the Query to DXL translation
//
//---------------------------------------------------------------------------
class CQueryToDXLResult
{
private:
// DXL representing the Query
CDXLNode *m_query_dxl;
// array of DXL nodes that represent the query output
CDXLNodeArray *m_query_output;
// CTE list
CDXLNodeArray *m_cte_producers;
public:
// ctor
CQueryToDXLResult(CDXLNode *query, CDXLNodeArray *query_output,
CDXLNodeArray *cte_producers);
// dtor
~CQueryToDXLResult();
// return the DXL representation of the query
const CDXLNode *CreateDXLNode() const;
// return the array of output columns
const CDXLNodeArray *GetOutputColumnsDXLArray() const;
// return the array of CTEs
const CDXLNodeArray *GetCTEProducerDXLArray() const;
};
} // namespace gpdxl
#endif // !GPDXL_CTranslatorQueryToDXLOutput_H
// EOF
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